Windows 10: Windows update made monitor resolution 480x640 and I can't change it

I just updated Windows (Windows Insider slow ring, Windows 10 Professional) and one of my three monitors is now locked in at 480x640. The monitor is in question is a Dell U2412M, with a resolution of 1920x1080. The strangest thing about this is that I have two of those Dell monitors, but only one is affected.

I noticed the problem after booting up my PC, and the login screen was displayed landscape (instead of flipped portrait) and was on the Dell monitor instead of my main monitor.

I have an EVGA GTX 1070 (part 08G-P4-6173-KR), and have the latest drivers from GeForce Experience. Restarting my computer didn't have any effect.

I attached some images below that may shed some more light on my issue. Any help would be much appreciated.


Here's what Windows thinks my monitor setup looks like:



Here you can see how Windows is preventing me from changing the resolution of the monitor:



Here's what happens when I go to select a monitor from Settings. Notice how the broken monitor (#1) has no name, and different specs than another working monitor of the same model (#2):



:)

 

Second monitor screen resolution problem

Hi,

For us to properly isolate the issue with your second monitor screen resolution, we would like to know the following:

• 
  Were there any changes made on your computer prior to the issue (e.g., updates, software installation)?
  
• 
  When did the issue first begin?
  
• 
  To make sure that we have not missed on anything, what troubleshooting steps have you done so far?
  

In the meantime, we suggest that you try resetting your monitor settings, and check if the issue still persists. You may refer to your monitor on how to reset it.

We look forward to your response.

 

Help! Windows 10 changed my resolution and can't see anything!!

Hi Etan,

We appreciate you for being part of Windows 10.

Monitors can support resolutions that are lower than their native resolutions, but text won't look as sharp and the display might be small, centered on the screen, edged with black, or stretched. It is recommended to set the screen resolution of the display
to the (Recommended) native resolution to get the best display on your monitor. Your screen resolution needs to be at least
1024x768 to have multiple windows and apps on your screen at the same time.

Kindly follow the below methods and check if it helps.


Method 1:


I suggest you to set the Display Resolution on your monitor to the recommended level. Follow the below steps

• Open the Start menu and type Settings in the search bar.
  
• Click on System and select Display.
• Make sure that you have set the Change the size of the text, apps and other items to 100%
  recommended.
• Click on Advanced display settings.
• Select the monitor and make sure that you have selected Resolution
  to 1920*1080 Recommended.

If the issue still persists, then follow the below method.



Method 2:


I suggest you to update the display adapter　then try to change the screen resolution.

Follow the steps given below to uninstall and reinstall the display drivers.　　

• Press Windows key + X and select Device Manager.
  
• Search for Display Adapters and expand it.
• Right click on the Display Adapters and select Uninstall.

If the issue still persists, I suggest you to contact the manufacturer to download the latest display adapters.

Kindly let us know if you need any further assistance with Windows. We are glad to assist you.

Thank you.

 

Monitor resolution

Hi,



Thank you for posting your question in Microsoft Community.



I understand that you are facing issues with screen resolution. I will try to help you in fixing the issue.

To help you suggest more steps to resolve the issue, I would appreciate if you could answer the following questions:



What exactly happens when you try to change the screen resolution? Do you get any error message?



The recommended resolution on windows 10 is 1920 x 1080. Change the resolution to 1920 x 1080 and check.

The reason why your display was stretched sideways is because the resolution was in-corrected.



Here are the steps to change the screen resolution:

• Right Click the Desktop and select
  Screen Resolution.
• Click the Make text and other items larger or smaller link.
• In the Change only the text size section click the
  drop down menu to select the items you want to change.

Hope the information was helpful